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LIGHT ENRICHMENT AND ITS INTERACTIONS WITH SOURCE-SINKALTERATION ON YIELD AND YIELD COMPONENTS IN SOYBEAN(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2006年01期
Page:
6-10
Research Field:
Publishing date:

Info

Title:
LIGHT ENRICHMENT AND ITS INTERACTIONS WITH SOURCE-SINKALTERATION ON YIELD AND YIELD COMPONENTS IN SOYBEAN
Author(s):
Liu Xiaobing 1 S .J .H erbert2 Jin Jian1 Zhang Qiuying1 Li Yanhua1 Wang Guanghua1
(1.Northeast Institute o f Geography and A groecology , CAS , H arbin , 150040 ;2.Dept .ofP lant and Soil S ciences , University o f Massachusetts , Amherst , 01003 , US A)
Keywords:
Soybean ; Light enrichment ; Source-sink alterations ; Yield components
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2006.01.0006
Abstract:
Light intensity during the reproductive period is the key environmental factor determining soy-bean yield .Responses of yield and yield components to light enrichment under varied population treatedwith different light enriched stages and source -sink alterations w ere investigated in the US and China . The yield increase effects differed among the light enriched stages .Early flow ering and pod set stages w ere the critical stages to increase yield by light enrichm ent .The increased yield by light enrichment at flow er-ing w as mainly due to the increase in pod number , w hile at pod set stage it w as mainly due to the increase in seed size .No significant yield increase w as found at seed fill stage by light enrichment for cultivars diffe-ring in seed size or grow n at different populations .This indicates that the regulation of light enrichment in-itiated at seed fill on yield and seed size is rather limited .Source/sink played different roles in yield forma-tion under various light regimes .Under natural light conditions , source played a very impor tant role be-cause leaf rem oval reduced greater yield com pared w ith that of pod rem oval .Sink also became an important yield -limiting factor w hile light enriched conditions were applied .It is proposed that light regimes have a significant regulatory function in source-sink relationship .

References:

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Last Update: 2016-12-12